Finite element method for large-amplitude two-dimensional panel flutter at hypersonic speeds
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Gray, Carl E.↗
Engineering topics
Gray, Carl E.
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A finite-element method for large-amplitude, two-dimensional panel flutter at hypersonic speeds
The nonlinear flutter behavior of a two-dimensional panel in hypersonic flow is investigated analytically. An FEM formulation based unsteady third-order piston theory (Ashley and Zartarian, 1956; McIntosh, 1970) and taking nonlinear structural and aerodynamic phenomena into account is derived; the solution procedure is outlined; and typical results are presented in extensive tables and graphs. A 12-element finite-element solution obtained using an alternative method for linearizing the assumed limit-cycle time function is shown to give predictions in good agreement with classical analytical results for large-amplitude vibration in a vacuum and large-amplitude panel flutter, using linear aerodynamics.
Mei, Chuh↗